May in Cagayan de Oro is the hottest month of the year. In May, the weather in Cagayan de Oro is typically hot. Average daily high temperature in May is about 29 degrees above zero. On average, Cagayan de Oro has 24 rainy, 4 cloudy, 2 sunny, and 1 partly cloudy day in May. The rains are usually heavy. May as well as January, June, July, and August is considered the most uncomfortable time to visit Cagayan de Oro.